Evolutionary Retention of Defensive Lateral Pedal Glands in the Smallest Siphonariid Limpet (Gastropoda: Pulmonata)

Shirley C Pinchuck; Brian R Allanson; Alan N Hodgson

doi:10.1080/15627020.2015.1106925

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Shirley C Pinchuck,¹ Brian R Allanson,² Alan N Hodgson^2,*

¹1Electron Microscope Unit, Rhodes University, Grahamstown, South Africa
²2Department of Zoology and Entomology, Rhodes University, Grahamstown, South Africa

^*Corresponding author, email: A.Hodgson@ru.ac.za

Abstract

Despite its cryptic habitat and habits, light and transmission electron microscopy has revealed that like many other siphonariids Siphonaria compressa, the smallest species of this genus, possesses lateral pedal glands. The pear-shaped glands (about 120 µm long × 70 µm maximum diameter) open via a pore, and are multicellular with three types of secretory cell that surround a central lumen. The glands of this minute pulmonate limpet are similar in structure to its larger relatives, suggesting that they are defensive in function.

Citation Download Citation

Shirley C Pinchuck, Brian R Allanson, and Alan N Hodgson "Evolutionary Retention of Defensive Lateral Pedal Glands in the Smallest Siphonariid Limpet (Gastropoda: Pulmonata)," African Zoology 50(4), 327-330, (1 December 2015). https://doi.org/10.1080/15627020.2015.1106925

Received: 14 September 2015; Accepted: 6 October 2015; Published: 1 December 2015

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